: Indicates the source material was a retail Blu-ray disc, ensuring the highest possible starting quality compared to theater recordings or "Cam" versions. Film Overview: Lost in Beijing (2007)
: This stands for Advanced Audio Coding , the format used for the audio track. -CM- Lost.in.Beijing.2007 BluRay 720p AVC AAC-N...
: The video codec used (Advanced Video Coding, also known as H.264). Brief identification BluRay : Indicates the source material